<PRE><B>Question 712585</B>
1.  3x + 2y=0  

You have to generate values for y from x

if x=2,  y=-3  (2,-3)

if x= -2 , y = y=2  (-2,3)

if x=4, y = -4, ( (4,-6) 

you have generated co-ordinates of three points.
plot the points on a graph and draw the straight line joining them

{{{drawing(300,300,-10,10,-10,10,grid(1),circle(2,-3,0.3),circle(-2,3,0.3),circle(4,-6,0.3),graph(300,300,-10,10,-10,10,y=(-3/2)x))}}}


You have to find the value of a and y.
I am not too sure whether i could explain 
3	x		-7	y	=	10	.............1		
Total value									
-2	x	+	1	y	=	-14	.............2		
Eliminate	y								
multiply (1)by		1							
Multiply (2) by		7							
3	x		-7	y	=	10			
-14	x	+	7	y	=	-98			
Add the two equations									
-11	x				=	-88			
/	-11								
x	=	8      							
plug value of			x	in (1)					
3	x		-7	y	=	10			
24			-7	y	=	10			
			-7	y	=	10		-24	
			-7	y	=	-14			
				y	=	2      			
x=	8      								
y=	2      								
m.ananth@hotmail.ca									
</PRE>